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A magic state’s fidelity can be superior to the operations that created it.
- Source :
-
New Journal of Physics . Feb2015, Vol. 17 Issue 2, p1-1. 1p. - Publication Year :
- 2015
-
Abstract
- The leading approach to fault tolerant quantum computing requires a continual supply of magic states. When a new magic state is first encoded, its initial fidelity will be too poor for use in the computation. This necessitates a resource-intensive distillation process that occupies the majority of the computer’s hardware; creating magic states with a high initial fidelity minimizes this cost and is therefore crucial for practical quantum computing. Here we present the surprising and encouraging result that raw magic states can have a fidelity significantly better than that of the two-qubit gate operations used to construct them. Our protocol exploits post-selection without significantly slowing the rate of generation and tolerates finite error rates in initializations, measurements and single-qubit gates. This approach may dramatically reduce the size of the hardware needed for a given quantum computing task. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FAULT-tolerant computing
*QUANTUM computing
*QUBITS
*DISTILLATION
*COMPUTERS
Subjects
Details
- Language :
- English
- ISSN :
- 13672630
- Volume :
- 17
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- New Journal of Physics
- Publication Type :
- Academic Journal
- Accession number :
- 101147715
- Full Text :
- https://doi.org/10.1088/1367-2630/17/2/023037